I am currently the owner of a 2002 GMC Sierra 2500HD ZF6 Speed Duramax. As a former Power Stroke owner, I was immediately blown away by the performance, ride quality and drivability of the GMC. I have been working on adding mods to this truck in hopes of making it my future pulling truck. Supplying fuel to the motor is a FASS 150 and has custom EFILive tuning from Punisher Performance. The air is supplied by S&B Intake and the truck has a Flo Pro turbo back exhaust. Getting the power to the ground I added a South Bend Dual Disc Competition Clutch. I have used Punisher Performance for all of my performance mods because they definitely know what they are talking about. I am planning to add mods such as a 66mm Cheetah turbo from Fleece Performance, DDP 50 percent-over injectors, ARP head studs, cowl induction hood and a rear roll pan with sled stops. Also in the future I plan to retire this truck from road use and turn the Duramax into my full-time 2.6 class pulling truck!